Category: Buick

P1127 Buick ECTS Actuator Power Source Circuit Malfunction Possible causes – Faulty Electronic Throttle Control System (ETCS) Actuator– Electronic Throttle Control System (ETCS) Actuator harness is open or shorted– Electronic Throttle Control System (ETCS) Actuator circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1127 Buick Description Battery positive…

P1120 Buick Throttle Position Sensor 1 Circuit Possible causes – Faulty Throttle Position Sensor– Throttle Position Sensor harness is open or shorted– Throttle Position Sensor circuit poor electrical connection– Throttle Position Sensor not properly adjusted What about the obd code? When the Powertrain Control Module (PCM) senses a signal voltage higher than the normal operating…

P1121 Buick Electric Throttle Control Actuator Possible causes – Faulty Electric Throttle Control Actuator– Electric Throttle Control Actuator harness is open or shorted– Electric Throttle Control Actuator circuit poor electrical connection What about the obd code? Electric throttle control actuator does not function properly due to the return spring malfunction or throttle valve is stuck…

P1122 Buick Electric Throttle Control Performance Problem Possible causes – Faulty Electric Throttle Control Actuator– Electric Throttle Control Actuator harness is open or shorted– Electric Throttle Control Actuator circuit poor electrical connection Tech description What about the obd code? Electric throttle control function does not operate properly. Symptoms – Engine Light ON (or Service Engine…

P1123 Buick Long Term Fuel Trim Adjustment Bank 1 System Too Rich Possible causes – Faulty HO2S– Faulty Mass Air Flow Sensor– High fuel pressure– Canister purge solenoid stuck open– HO2S harness is open or shorted– HO2S circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal…

P1119 Buick Engine Coolant Temperature Signal Out Of Rage Possible causes – Faulty Engine Coolant Temperature Sensor– Engine Coolant Temperature Sensor harness is open or shorted– Engine Coolant Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1119 Buick Description The Engine Coolant Temperature (ECT) sensor contains…

P1116 Buick Engine Coolant Temperature Sensor Performance Problem Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…

P1117 Buick Engine Coolant Temp Signal Out-Of-Range Low Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning Light)…

P1118 Buick Engine Coolant Temp Signal Out-Of Range High Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon Warning…

P1112 Buick Intake Air Temperature Sensor Circuit Intermittent Low Voltage Possible causes – Faulty Intake Air Temperature Sensor– Intake Air Temperature Sensor harness is open or shorted– Intake Air Temperature Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1112 Buick Description The Intake Air Temperature (IAT) sensor…

P1113 Buick Intake Resonance Switchover Valve Circuit Possible causes – Faulty HO2 Sensor Bank 1 Sensor 1– HO2 Sensor Bank 1 Sensor 1 harness is open or shorted– HO2 Sensor Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera…

P1114 Buick Engine Coolant Temperature Sensor Circuit Intermittent Low Voltage Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon…

P1115 Buick Engine Coolant Temperature Sensor Circuit Intermittent High Voltage Possible causes – Faulty Engine Coolant Temperature (ECT) sensor– Low engine coolant level– Engine Coolant Temperature (ECT) sensor harness is open or shorted– Engine Coolant Temperature (ECT) sensor electrical circuit poor connection– Faulty engine coolant thermostat Symptoms – Engine Light ON (or Service Engine Soon…

P1108 Buick Manifold Differential Pressure Sensor High Input Possible causes – Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness is open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1108 Buick Description The Manifold Absolute Pressure (MAP)…

P1109 Buick HO2S22 Sensor Circuit Voltage Too Low Air Leak Possible causes – Faulty HO2S22 Sensor– HO2S22 Sensor harness is open or shorted– HO2S22 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick…

P1110 Buick HO2S Heating Circuit Bank 2 Sensor 2 Short To Positive Possible causes – Faulty HO2S Heating Circuit Bank 2 Sensor 2– HO2S Heating Circuit Bank 2 Sensor 2 harness is open or shorted– HO2S Heating Circuit Bank 2 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon…

P1111 Buick Intake Valve Timing Control Solenoid Valve Circuit Bank 1 Possible causes – Faulty Intake Valve Timing Control Solenoid Valve Bank 1– Intake Valve Timing Control Solenoid Valve Bank 1 harness is open or shorted– Intake Valve Timing Control Solenoid Valve Bank 1 circuit poor electrical connection Tech description Since the Intake valve timing…

P1104 Buick HO2S12 Sensor Circuit Voltage Too Low Air Leak Possible causes – Faulty HO2S12 Sensor– Exhaust leak near HO2S12 Sensor– HO2S12 Sensor harness is open or shorted– HO2S12 Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse –…

P1105 Buick HO2S Heating Circuit Bank 1 Sensor 2 Short To Positive Possible causes – Faulty Heated Oxygen Sensor (HO2S) Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 blown fuse– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON…

P1106 Buick Manifold Absolute Pressure Sensor Short Circuit Intermittent High Input Possible causes – Faulty Manifold Absolute Pressure (MAP) sensor– Manifold Absolute Pressure (MAP) sensor harness is open or shorted– Manifold Absolute Pressure (MAP) sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Engine rough idle– Engine hesitation…